<template>
    <div>
         <!-- 面包屑导航条位置 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>

        <el-card class="box-card" >
            <!-- 为ECharts准备一个具备大小（宽高）的Dom -->
            <div id="main" style="width: 700px;height:400px;"></div>
        </el-card>
    </div>
</template>

<script>
//导入echarts
import echarts from 'echarts'
export default {
    data() {
        return {
        options: {
            title: {
                text: '用户来源'
            },
            tooltip: {
                trigger: 'axis',
                axisPointer: {
                type: 'cross',
                label: {
                    backgroundColor: '#E9EEF3'
                }
                }
            },
            grid: {
                left: '3%',
                right: '4%',
                bottom: '3%',
                containLabel: true
            },
            xAxis: [
                {
                boundaryGap: false
                }
            ],
            yAxis: [
                {
                type: 'value'
                }
            ]
            }
        };
    },
    created () {
        
    },
    //dom元素初始化完毕
    async mounted () {
        // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));

        const {data: res } = await this.$http.get('reports/type/1')
        if(res.meta.status !== 200) return this.$message.error('获取折线图数据失败')
        //使用lodash 合并函数
        const result = _.merge(res.data, this.options)


        // 指定图表的配置项和数据
        // var option = {
        //     title: {
        //         text: 'ECharts 入门示例'
        //     },
        //     tooltip: {},
        //     legend: {
        //         data:['销量']
        //     },
        //     xAxis: {
        //         data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
        //     },
        //     yAxis: {},
        //     series: [{
        //         name: '销量',
        //         type: 'bar',
        //         data: [5, 20, 36, 10, 10, 20]
        //     }]
        // }
        // 使用刚指定的配置项和数据显示图表。
        myChart.setOption(result);
    },
    methods: {},
};
</script>

<style scoped lang="scss">

</style>
